Remove explicit disabling the new type inference from test data

compiler/testData/diagnostics/tests/inference/commonSystem/lessSpecificTypeForArgumentCallWithExactAnnotation.fir.kt

@@ -1,4 +1,3 @@
-// !LANGUAGE: -NewInference
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
 interface A

compiler/testData/diagnostics/tests/inference/commonSystem/lessSpecificTypeForArgumentCallWithExactAnnotation.kt

@@ -1,4 +1,3 @@
-// !LANGUAGE: -NewInference
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
 interface A
@@ -12,6 +11,6 @@ fun foo(a: Any) {}
 
 fun test(b: B, c: C) {
     foo(
-        <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Any")!>select(b, c)<!>
+        <!DEBUG_INFO_EXPRESSION_TYPE("A")!>select(b, c)<!>
     )
 }

compiler/testData/diagnostics/tests/inference/commonSystem/postponedCompletionWithExactAnnotation.fir.kt

@@ -1,5 +1,4 @@
 // !DIAGNOSTICS: -UNUSED_PARAMETER
-// !LANGUAGE: -NewInference
 
 interface ISample
 

compiler/testData/diagnostics/tests/inference/commonSystem/postponedCompletionWithExactAnnotation.kt

@@ -1,5 +1,4 @@
 // !DIAGNOSTICS: -UNUSED_PARAMETER
-// !LANGUAGE: -NewInference
 
 interface ISample
 
@@ -11,13 +10,13 @@ fun <K> elvisExact(x: K?, y: K): @kotlin.internal.Exact K = y
 fun <T : Number> materialize(): T? = TODO()
 
 fun test(nullableSample: ISample, any: Any) {
-    <!DEBUG_INFO_EXPRESSION_TYPE("ISample")!>elvisSimple(
+    <!DEBUG_INFO_EXPRESSION_TYPE("ISample?")!>elvisSimple(
         nullableSample,
-        <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>materialize<!>()
+        materialize()
     )<!>
 
     elvisSimple(
-        <!DEBUG_INFO_EXPRESSION_TYPE("ISample")!>elvisSimple(nullableSample, <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>materialize<!>())<!>,
+        <!DEBUG_INFO_EXPRESSION_TYPE("ISample?")!>elvisSimple(nullableSample, materialize())<!>,
         any
     )